Journal
MINERALS ENGINEERING
Volume 69, Issue -, Pages 170-176Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mineng.2014.07.022
Keywords
Thermosensitive polymers; Lower Critical Solution Temperature (LCST); Flocculation; PNIPAM
Funding
- Ministry of Science and Higher Education (Poland) [IP2012019972]
- Balassi Intezet
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Thermosensitive polymers are gaining increasing interest due to their possible applications as drug delivery systems, flotation agents in mineral ore processing or flocculants in wastewater treatment. Lower Critical Solution Temperature (LCST) is a crucial parameter of thermoresponsive polymers. In this work the comparison of four different methods of LCST determination, i.e. transmittance, viscosimetric, Dynamic Light Scattering (DLS) and pH measurement, are presented. They are found to be complementary and each of them is shown to fail under certain condition. For the purpose of this research a cationic copolymer of poly(N-isopropylacrylamide) with diallyldimethylammonium chloride was synthesized. Moreover two reference polymer samples were investigated. (C) 2014 Elsevier Ltd. All rights reserved.
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